LOGICODE TECHNOLOGY, INC.

AUTO-RELIABLE FALLBACK CHARACTER
Type:	Register
Format:	AT [cmds] %An [cmds]
Example:	AT%A20<CR>
Default:	13
Range:	0-127
Unit:	ASCII
Description:	Sets the character used as the auto-reliable fallback character. %A0 will disable this function.

ACCEPT RELIABLE MODE
Type:	Immediate
Format:	AT [cmds] \Un
Example:	AT \U<CR>
Description:	Accepts remote modem’s request for reliable link.

AUTO-RELIABLE TIME BUFFER CONFIGURATION
Type:	Configuration
Format:	AT [cmds] \Cn [cmds]
Example:	AT \C1 &W<CR>
Description:	Controls the handling of incoming data during auto-reliable time period.
Command	Function
» \C0	Data is discarded.
\C1	Data is buffered.
\C2	Data is discarded, modem returns to normal mode on receiving auto-reliable fallback character.

AUTO-RETRAIN
Type:	Configuration
Format:	AT %En
Example:	AT %E1 <CR>
Description:	Selects auto-retrain mode.
Command	Function
%E0	Auto-retrain disabled.
» %E1	Auto-retrain enabled.

BIT-MAPPED REGISTER S14
Format		AT [cmds] S14=n [cmds]
Example:		ATS14=40<CR>
Default:		Read only
Range:		0 - 174
Unit:		Bit-mapped
Description:		Stores AT command settings.
Bit	Value		Function
0	0		Not used.
1	0 1		Echo function disabled. Echo function enabled.
2	0 1		Result code sending enabled. Result code sending disabled.
3	0 1		Numeric format enabled. Verbose format enabled.
4	0		Not used.
5	0 1		Tone dialing enabled. Pulse dialing enabled.
6	0		Not used.
7	0 1		Answer mode enabled. Originate mode enabled.

BIT-MAPPED REGISTER S21
Format		AT [cmds] S21=n [cmds]
Example:		ATS21=4<CR>
Default:		0
Range:		0 - 253
Unit:		Bit-mapped
Description:		Selects jack type, CTS signal, low DTR action, DCD signal, DSR signal, and startup profile.
Bit	Value		Function
0	» 0 1		Selects RJ-11, RJ-41S, or RJ45S jack. Selects RJ-12 or RJ-13 jack.
1	0		Not used.
2	0 » 1		CTS follows RTS. CTS forced high.
4, 3	» 00 01 10 11		DTR signal ignored. Modem goes to command mode on low DTR. Modem disconnects on low DTR. Auto-Answer is disabled. Modem is initialized on low DTR.
5	» 0 1		DCD forced high. DCD normal.
6	» 0 1		DSR forced high. DSR normal.
7	» 0 1		Profile 0 selected at power-up. Profile 1 selected at power-up.

BIT-MAPPED REGISTER S23
Format		AT [cmds] S23=n [cmds]
Example:		ATS23=177<CR>
Default:		177
Range:		0-255
Unit:		Bit-mapped
Description:		Grants/denies remote digital loopback, controls DTE rate and parity, and sets guard tone.
Bit	Value		Function
0	0 » 1		Remote digital loopback denied. Remote digital loopback allowed.
3, 2, 1	000 001 010 011 100 101 110		Sets serial port speed to 0-300bps. Sets serial port speed to 1200bps. Sets serial port speed to 2400bps. Sets serial port speed to 4800bps. Sets serial port speed to 7200bps. Sets serial port speed to 9600bps. Sets serial port speed to 19200bps.
5,4	00 01 10 » 11		Even parity. Space parity. Odd parity. Mark or no parity.
7, 6	00 01 » 10		Guard tone disabled. Guard tone disabled. Guard tone 1800Hz enabled.

BIT-MAPPED REGISTER S27
Format		AT [cmds] S27=n [cmds]
Example:		ATS27=9<CR>
Default:		9
Range:		0 - 127
Unit:		Bit-mapped
Description:		Displays sync/async mode, line type, internal clock, and ITU-T/Bell modes.
Bit	Value		Function
3, 1, 0	000 001 » 101 110		Asynchronous mode, serial port speed follows connect speed. Asynchronous off-line command mode and synchronous connect mode. Error-correcting mode. Asynchronous mode, serial port speed locked.
2	» 0 1		Dial up line. Leased line.
5, 4	» 00 01 10		Internal DTE transmit clock source. External DTE transmit clock source. Slave DTE transmit clock source.
6	» 0 1		CCITT mode. Bell mode.

BREAK SEND
Type:	Configuration
Format:	AT [cmds] \Bn [cmds]
Example:	AT \B3 &W<CR>
Range:	0-9
Unit:	1ms
Description:	Sends break to modem.

BREAK TYPE
Type:		Configuration
Format:		AT [cmds] \Kn [cmds]
Example:		AT \K1 <CR>
Description:		Configures action of break signal.
Command	Break from DTE Reliable/Normal mode		Break from DTE Direct mode	Modem receives \B	Break from remote modem
\K0	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
\K1	Buffers cleared and break sent to remote modem.		Send break to remote modem immediately.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
\K2	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Send break to remote modem immediately.	Send break to DTE immediately.
\K3	Send break to remote modem immediately.		Send break to remote modem immediately.	Send break to remote modem immediately.	Send break to DTE immediately.
\K4	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.
» \K5	Send break with transmitted data.		Send break to remote modem immediately.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.

BUFFER VOICE/FAX
Type:	Configuration
Format:	AT [cmds] Kn [cmds]
Example:	AT K0 &W<CR>
Description:	Use SRAM for fax and voice mode buffering.
Command	Function
K0	SRAM buffer disabled.
K1	SRAM buffer enabled.

CALLING TONE
Type:	Configuration
Format:	AT [cmds] -Cn [cmds]
Example:	AT -C1 DT555-1212<CR>
Description:	Controls the transmission of the calling tone while dialing.
Command	Function
-C0	Calling tone disabled.
-C1	Calling tone enabled.

COMPRESSION
Type:	Configuration
Format:	AT %Cn
Example:	AT *EC0 %C1 *AP0<CR>
Description:	Selects data compression.
Command	Function
%C0	Data compression disabled.
» %C1	Data compression enabled.

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Example:	AT \N1 DT555-1212<CR>
Description:	Sets connect mode.
Command	Function
\N1	Normal mode.
\N0	Direct mode.
\N2	MNP reliable mode.
» \N3	V.42 auto-reliable mode.
\N4	V.42 reliable mode.

EXTENDED RESULT CODE FORMAT
Type:	Configuration
Format:	AT [cmds] \Vn [cmds]
Example:	AT \V0 Q0<CR>
Description:	Selects extended result codes.
Command	Function
\V0	Extended result codes disabled.
» \V1	MNP result codes enabled.
\V2	V.42 result codes enabled.

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] \Gn [cmds]
Example:	AT G1 &M0<CR>
Description:	Selects modem port flow control.
Command	Function
» \G0	Flow control disabled.
\G1	Flow control enabled.

XON/XOFF PASS-THROUGH
Type:	Configuration
Format:	AT [cmds] \Xn [cmds]
Example:	AT \X0 O<CR>
Description:	Selects whether XON/XOFF signals are sent to remote modem.
Command	Function
» \X0	XON/XOFF signals trapped by local modem.
\X1	XON/XOFF passed through local modem.

FLOW CONTROL TYPE
Type:	Configuration
Format:	AT [cmds] \Qn [cmds]
Example:	AT \Q0 A<CR>
Description:	Sets type of flow control used by modem.
Command	Function
\Q0	Flow control disabled.
\Q1	Software flow control enabled.
\Q2	Unidirectional flow control enabled.
» \Q3	Bidirectional flow control enabled.

INACTIVITY TIMER
Type:	Register
Format:	AT [cmds] \Tn [cmds]
Example:	AT\T20<CR>
Default:	0
Range:	0-90
Unit:	1 second
Description:	Sets the length of time that the modem does not receive information before it disconnects.

INACTIVITY TIMER
Type:	Register
Format:	AT [cmds] S90=n [cmds]
Example:	ATS90=20<CR>
Default:	0
Range:	0-255
Unit:	1 minute
Description:	Sets the length of time that the modem does not receive information before it disconnects.

PROTOCOL/SPEED
Format		AT [cmds] S109=n [cmds]
Example:		ATS109=62<CR>
Default:		62
Range:		0 - 62
Unit:		Bit-mapped
Description:		Selects the available speeds.
Bit	Value		Function
0	0		Not used.
1	0 » 1		4800bps disabled. 4800bps enabled.
2	0 » 1		7200bps disabled. 7200bps enabled.
3	0 » 1		9600bps disabled. 9600bps enabled.
4	0 » 1		12Kbps disabled. 12Kbps enabled.
5	0 » 1		14.4Kbps disabled. 14.4Kbps enabled.

LOCK SERIAL PORT
Type:	Configuration
Format:	AT [cmds] \Jn [cmds]
Example:	AT %L3 %B14 \J0<CR>
Description:	Sets operation of serial port speed.
Command	Function
» \J0	Serial speed locked.
\J1	Serial speed follows connect speed.

LOOPBACK TESTS
Format		AT [cmds] S16=n [cmds]
Example:		ATS16=32<CR>
Default:		0
Range:		0 - 255
Unit:		Bit-mapped
Description:		Enables loopback tests.
Note:		Bit 3 is read-only.
Bit	Value		Function
0	» 0 1		Local analog loopback test disabled. Local analog loopback test enabled.
1	0		Not used.
2	» 0 1		Local digital loopback test disabled. Local digital loopback test enabled.
3	» 0 1		Modem is not performing remote digital loopback test. Modem is performing remote digital loopback test.
4	» 0 1		Remote digital loopback test disabled. Remote digital loopback test enabled.
5	» 0 1		Remote digital loopback with local self-test disabled. Remote digital loopback with local self-test enabled.
6	» 0 1		Local analog loopback with local self-test disabled. Local analog loopback with local self-test enabled.

MAXIMUM BLOCK SIZE FOR TRANSMISSION
Type:	Configuration
Format:	AT [cmds] \An [cmds]
Example:	AT \A3 %C1<CR>
Description:	Sets the maximum transmittable block size.
Command	Function
\A0	MNP block size is 64 characters.
\A1	MNP block size is 128 characters.
\A2	MNP block size is 192 characters.
» \A3	MNP block size is 256 characters.

RETURN TO RELIABLE MODE
Type:	Immediate
Format:	AT [cmds] \Z [cmds]
Example:	AT \Z <CR>
Description:	Ends reliable mode link, initiate return to normal mode.

PROTOCOL/SPEED
Type:	Configuration
Format:	AT [cmds] Fn [cmds]
Example:	AT F0 A<CR>
Description:	Selects the current protocol and speed.
Command	Function
F0	Auto-select fastest common protocol.
F1	Select V.21 and Bell 103A.
F3	Select V.23 only.
F4	Select V.22 and Bell 212A.
F5	Select V.22bis only.
F6	Select V.32bis and V.32.
F7	Select V.32bis only.
F8	Select V.32 only.
F9	Select V.32bis only.
F10	Select V.32bis only.

ON-LINE IN RELIABLE MODE
Type:	Immediate
Format:	AT [cmds] \On
Example:	AT \O<CR>
Description:	Returns to on-line and requests reliable mode connection.

CONVERT TO RELIABLE MODE
Type:	Immediate
Format:	AT [cmds] \Y [cmds]
Example:	AT \Y<CR>
Description:	Initiates reliable mode link.

V.42 HANDSHAKE OPTIONS
Type:	Configuration
Format:	AT [cmds] -Jn [cmds]
Example:	AT-J &W<CR>
Description:	Controls negotiation of V.42 and MNP protocols.
Command	Function
-J0	V.42 negotiation disabled.
» -J1	V.42 negotiation enabled.

V.42bis COMPRESSION
Type:	Configuration
Format:	AT [cmds] "Hn [cmds]
Example:	AT "H0 &W<CR>
Description:	Controls V.42bis compression.
Command	Function
"H0	Data compression disabled.
"H1	Data compression enabled.
"H2	Data compression enabled on transmit only.
» "H3	Data compression enabled on receive only.

V.42bis STRING LENGTH
Type:	Configuration
Format:	AT [cmds] "On [cmds]
Example:	AT"O6<CR>
Default:	16
Range:	6-250
Unit:	1 character
Description:	Sets the maximum number of characters compressed into a V.42bis code word.